WATCH: Dude in Trench Coat Pulls Out Knife on Q Train

Screenshot via Mariah Lopez Ebony/Facebook

FORT GREENE, BROOKLYN — A man in a black trenchcoat was caught on video Thursday afternoon as he stood silently among Q Train riders, a menacing look on his face and his right hand clutching some kind of small knife. He can then be seen slipping the knife into his pocket and pacing slowly down the length of the train.

Facebook user Mariah Lopez Ebony uploaded a video of the wannabe subway slasher to her page Thursday.

"This crazy motherf***er got a knife on the train," Ebony says in the video. And later: "I have been in New York all my life and I have never seen some sh*t like this."

Police later identified the man as Ysaac Paul, a 31-year-old resident of East 19th Street near Cortelyou Road in Ditmas Park.

NYPD officers responded to the Dekalb Avenue station around 2 p.m. Thursday on reports of a man "standing with a knife in his right hand, in public view" and causing passengers to fear for their safety, a police spokesman told Patch.

When officers approached Paul, the spokesman said, he began to "flail" his arms around with the knife still in his hand.

Paul was arrested at the scene and charged with "resisting arrest, criminal possession of a weapon, harassment and disorderly conduct," police said.

According to the New York Post, Paul was previously arrested around three years ago for jumping a turnstile at an F stop in Manhattan.

There has also been a frightening rise in stabbings and slashings in 2016 — many of them on the subway.

As of Feb. 21, police had recorded nearly 567 stabbings and slashings across NYC, almost 100 more than in the same time frame last year.

Crimes committed on the NYC subway system are up 25 percent in 2016 compared to the same time period last year, according to CompStat 2.0, a cool new crime-mapping tool premiered last month by the NYPD. And in North Brooklyn, the same tool shows, this trend is even worse: As of Feb. 21, transit crime was up 58 percent from last year.

Previously on Patch:

• Brooklyn Subway Slasher Turns Himself Over to Police
• Woman on Brooklyn A Train: ‘I‘m Going To Cut You’
• Man Slashes Brooklyn A Train Rider, Disappears Into Subway System: Reports
• 2 Men Slashed Aboard Brooklyn C Train: Police
• Another Brooklyn Subway Slasher Caught on 3 Train
• Brooklyn Subway Nap Ends in Slashing, Police Say